EP2511198B1 - Storage facility - Google Patents

Storage facility Download PDF

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Publication number
EP2511198B1
EP2511198B1 EP10835784.9A EP10835784A EP2511198B1 EP 2511198 B1 EP2511198 B1 EP 2511198B1 EP 10835784 A EP10835784 A EP 10835784A EP 2511198 B1 EP2511198 B1 EP 2511198B1
Authority
EP
European Patent Office
Prior art keywords
platform
posture
platform portion
movement path
along
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10835784.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2511198A1 (en
EP2511198A4 (en
Inventor
Yasushi Morikawa
Hideo Yoshioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daifuku Co Ltd
Original Assignee
Daifuku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daifuku Co Ltd filed Critical Daifuku Co Ltd
Publication of EP2511198A1 publication Critical patent/EP2511198A1/en
Publication of EP2511198A4 publication Critical patent/EP2511198A4/en
Application granted granted Critical
Publication of EP2511198B1 publication Critical patent/EP2511198B1/en
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B65G1/04—Storage devices mechanical
    • B65G1/0407—Storage devices mechanical using stacker cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/07—Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
    • E06C9/12—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members laterally displaceable

Definitions

  • the present invention relates to an article storage facility including a storage shelf having storing sections for storing articles juxtaposed along a vertical direction and a shelf lateral width direction, a stacker crane that travels on a floor surface of a movement path formed forwardly of the storage shelf along the longitudinal direction thereof, and a work platform on which a worker can ride.
  • the article storage facility described above is configured such that articles may be stored in the storage shelf and entrance and retrieval of the articles to/from the storage sections are made possible by the stacker crane. And, in case the site for effecting a work is distant high away from the floor surface at a significant level out of the hand reach of the worker present on the floor surface such as the case of occurrence of collapse of articles stored on the storage shelf or being conveyed by the stacker crane at a position high off the floor surface, conventionally, the work platform was moved to a desired position on the movement path and the worker riding on this work platform would do the required work.
  • the work platform was configured as a "ladder" suspended and supported by a movement rail provided upwardly of a movement path to be movable along the longitudinal direction of the movement path, so that a worker can climb up/down from/to the floor surface.
  • this work platform has a reduced width along the longitudinal direction of the movement path, so that when the work platform is not used, this work platform may be stored at a terminal end of the movement path without interfering with the traveling of the stacker crane (see e.g. JP-H-0115 8191 A ).
  • US 5,148,889 A1 discloses a shelf with a pivotable ladder to provide access to the shelf to a worker. In this shelf system, no stacker crane can be used without subtantial modifications.
  • the present invention has been made in view of the above-described state of the art. Its object is to provide an article storage facility with which its work platform, when stored, will hardly interfere with traveling of the stacker crane and which also allows a work using the work platform to be effected with ease.
  • An article storage facility relating to the present invention includes: a storage shelf having storing sections for storing articles juxtaposed along a vertical direction and a shelf lateral width direction; a stacker crane that travels on a floor surface of a movement path formed forwardly of the storage shelf along the longitudinal direction thereof, and a work platform on which a worker can ride.
  • the work platform can be moved to a desired position on the movement path by moving the suspended portion together with the platform portion along the longitudinal direction of the movement path. Further, the posture of the platform portion can be switched over to the riding posture and the folded posture by pivoting this platform portion about the pivot axis.
  • this platform portion when the platform portion is switched in posture to the folded posture, this platform portion is folded toward the suspended portion to extend along the vertical direction, whereby the work platform now has a reduced width along the longitudinal direction of the movement path.
  • this work platform when the work platform, when not used, is stored at the terminal end of the movement path, this work platform will hardly interfere with traveling of the stacker crane.
  • this platform portion when the platform portion is switched to the riding posture, this platform portion in the form of a plate extends along the longitudinal direction of the movement path, so that the worker riding on this platform portion can move on this platform along the longitudinal direction of the movement path. As a result, the worker as riding on this platform portion can effect a work over a wide area along the longitudinal direction of the movement path.
  • a work over a wide area along the longitudinal direction of the movement path is made possible. Accordingly, when a work is to be effected over a wide area along the longitudinal direction of the movement path, there is no need for frequently moving the work platform along the longitudinal direction of the movement path during the work and the work can be effected with ease. Moreover, when the platform portion is switched to the riding posture, the platform portion in the form of a plate assumes the posture extending along the longitudinal direction of the movement path, so the posture of the worker remains stable even if the worker does not hold the platform portion or the suspended portion. Hence, the work is facilitated in this respect as well.
  • said work platform includes a stairway portion connected to said platform portion for allowing the worker to climb up/down the stairway portion from/to the floor surface; said stairway portion is connected and supported to said platform portion with its base end portion pivotable about a second pivot axis extending along a lateral width of said movement path; and with pivotal movements thereof about said second pivot axis, said stairway portion can selectively assume a climbing posture where the stairway portion extends along the vertical direction with the platform portion being switched to said riding posture and a non-climbing posture where the stairway portion is folded toward the platform portion to extend along the vertical direction, with the platform portion being switched to said folded posture.
  • this stairway portion can be switched over in posture between the climbing posture and the non-climbing posture. And, when the stairway portion is switched to the non-climbing posture, the stairway portion assumes the posture extending along the vertical direction with the platform portion being switched to the folded posture, whereby the thickness of the work platform in the longitudinal direction of the movement path is reduced. As a result, when the work platform is stored, this work platform will hardly interfere with traveling of the stacker crane. Further, when the stairway portion is switched to the climbing posture, this stairway portion assumes the posture extending along the vertical direction with the platform portion being switched to the riding posture.
  • the worker can climb up/down the stairway portion thereby riding on/off the work platform.
  • the stairway portion can be set with only pivoting this stairway portion about the second pivot axis, the setting operation of the work platform can be effected more easily as compared with an arrangement that requires separately providing a stepladder or the like.
  • said storage shelf includes a support member for receiving and supporting said platform portion under its riding posture.
  • this platform portion when the platform portion is switched to the riding posture, this platform portion can be supported by the support member included in the article storage shelf to be maintained under this riding posture. Hence, with this arrangement, the worker as riding on the platform portion can effect a work with even greater ease. Further, since the support member is provided in the article storage shelf, there is no need for separately providing a support deck or the like for supporting the platform portion under its riding posture. And, the platform portion can be set to be received and supported by the support member with simply switching this platform portion to the riding posture. Therefore, the setting operation of the work platform can be readily effected.
  • the facility in the third characterizing feature described above, includes a pair of said storage shelves disposed on opposed lateral width sides of said movement path; and said support member comprises elongate members provided respectively for the pair of storage shelves, said elongate members being formed elongate along the longitudinal direction of the movement path.
  • the platform portion as being switched to the riding posture has its opposed lateral width portions received and supported by the elongate members along the entirety of this platform portion along the longitudinal direction, it is possible to restrict tilting displacement of the platform portion along the its longitudinal direction and lateral width direction. Therefore, the platform portion can be maintained under the riding posture in a stable manner.
  • said platform portion includes a pivot restricting member for restricting the upward pivotal movement of said platform portion, said pivot restricting member being switchable in position between a pivot restricting position where said pivot restricting member is located downwardly of said support member with said platform portion being switched to the riding posture, thereby to restrict a pivotal movement of said platform portion from said riding posture to said folded posture and a pivot allowing position where said pivot restricting member is retracted away from the position downwardly of the support member with said platform portion being switched to said riding posture, thereby to allow the pivotal movement of said platform portion from said riding posture to said folded posture.
  • the pivot restricting member when the pivot restricting member is switched to the pivot allowing position, this pivot restricting member will not interfere with the support member and the platform portion can be switched over in posture between the riding posture and the folded posture. Further, when the pivot restricting member is switched in position to the pivot allowing posture with the platform portion being switched to the riding posture to be received and supported by the support member, the platform portion under the riding posture has its downward pivotal movement restricted by the support member and has also its upward pivotal movement restricted by the pivot restricting member. Hence, the upward and downward pivotal movements of the platform portion under the riding posture can be restricted and the platform portion can be maintained under the riding posture in a stable manner.
  • a lower guide rail provided in the floor surface of said movement path for guiding a lower portion of said stacker crane and an upper guide rail provided upwardly of said movement path for guiding an upper portion of said stacker crane, said upper guide rail acting also as said movement rail.
  • the upper guide rail for guiding the upper portion of the stacker crane along the movement path acts also as the movement rail, there is no need for separately providing a rail dedicated to guiding of the suspended portion along the movement path. Hence, the construction of the article storage facility can be simplified.
  • said work platform includes an urging means for urging said platform portion from said riding posture toward said folded posture.
  • the platform portion is urged by the urging means from the riding posture toward the folded posture so that some of the load of the platform portion can be offset by the urging by the urging means, only a small force is needed for supporting the platform portion when this platform portion is to be switched in posture from the folded posture to the riding posture. Further, the force needed for lifting up the platform portion when this platform portion is to be switched over from the riding posture to the folded posture can be small as well. Therefore, the posture switchover operations of the platform portion to the riding posture or the folded posture are facilitated.
  • the article storage facility includes a storage shelf 1 having storing sections for storing articles juxtaposed along the vertical direction and the shelf lateral width direction, a stacker crane 2 that travels on a floor surface of a movement path S formed forwardly of the storage shelf 1 along the longitudinal direction thereof, and a work platform 3 on which a worker can ride.
  • a pair of the storage shelves 1 are provided on opposed sides of the movement path S along the direction of its lateral width, so that the movement path S is formed between the pair of storage shelves 1.
  • the article storage facility is configured for storing, as "articles", containers that respectively house partly-finished products of e.g. semiconductor devices, liquid crystal display devices, etc.
  • the article storage facility is installed inside a clean room from which dust has been removed.
  • the clean room is configured as a down-flow type wherein a cleaned cleaning air is caused to flow from the ceiling toward the floor of the room to circulate downwardly. More particularly, as shown in Fig. 1 , a space downwardly of a grating floor 5 constituting the floor portion and a space upwardly of an air filter 6 constituting the ceiling portion are communicated to each other through a blower fan 7 and a pre-filter 8, so that the air present inside the clean room is circulated while being cleaned by the pre-filter 8 and the air filter 6 and the resultant cleaned air is fed from the ceiling portion to the floor portion of the clean room.
  • the article storage facility includes a lower guide rail 11 provided in the floor surface of the movement path S for guiding a lower portion of the stacker crane 2 and an upper guide rail 12 provided upwardly of the movement path S for guiding an upper portion of the stacker crane 2.
  • the stacker crane 2 is configured to travel along the movement path S while being guided by the lower guide rail 11 and the upper guide rail 12.
  • the work platform 3 includes a suspended portion 14 suspended and supported above a floor surface, the suspended portion 14 being movable by the upper guide rail 12 along the longitudinal direction of the movement path S, and a platform portion 15 provided in the form of a plate on which the worker can ride, the platform portion 15 having a base end thereof connected to a lower end portion of the suspended portion 14 to be pivotable about a pivot axis P1 extending along the direction of lateral width of the movement path S.
  • the work platform 3 further includes a stairway portion 16 connected to the platform portion 15 for allowing the worker to climb up/down the stairway portion from/to the floor surface.
  • the stairway portion 16 is connected and supported to the leading end portion of the platform portion 15 with its base end portion pivotable about a second pivot axis P2 extending along the lateral width of the movement path S. Meanwhile, the terminal end along the longitudinal direction of the platform portion 15 connected and supported to the suspended portion 14 is referred to as the "base end portion”, whereas the opposite terminal end is referred to as the "leading end portion", respectively. Further, the terminal end along the longitudinal direction of the stairway portion 16 connected and supported to the platform portion 15 is referred to as the "base end portion”.
  • the suspended portion 14 is suspended and supported by the upper guide rail 12, and to this suspended portion 14, the platform portion 15 is connected and the stairway portion 16 is connected to the platform portion 15.
  • the suspended portion 14, the platform portion 15 and the stairway portion 16 can be moved altogether along the longitudinal direction of the movement path S.
  • this upper guide rail 12 acts also as a movement rail 13 for suspending and supporting the suspended portion 14 upwardly of the floor surface with allowing movement thereof along the movement path S.
  • the work platform 3 has a narrower width than the lateral width of the movement path S (the distance between the pair of storage shelves 1).
  • the platform portion 15 can selectively assume a riding posture (see Fig. 5 ) wherein the platform portion 15 extends along longitudinal direction of the movement path S so that the worker riding on this platform portion 15 can move along the longitudinal direction of the movement path S and a folded posture (see Fig. 4 (a) ) wherein the platform portion 15 is folded toward the suspended portion 14 to extend along the vertical direction.
  • the stairway portion 16 can selectively assume a climbing posture (see Fig. 5 ) where the stairway portion 16 extends along the vertical direction with the platform portion 15 being switched to the riding posture and a non-climbing posture (see Fig.
  • the first pivot axis P1 corresponds to what is referred to as the "pivot axis" in the present invention.
  • the work platform 3 when the platform portion 15 is set to the riding posture and the stairway portion 16 is set to the climbing posture, the work platform 3 is switched to the working condition where the worker can climb onto the platform portion 15 with using the stairway portion 16. Also, with this work platform 3, as illustrated in Fig. 4 (a) , when-the platform portion 15 is set to the folded posture and the stairway portion 16 is set to the non-climbing posture, the work platform 3 is switched to the moving condition where the work platform 3 can be moved along the longitudinal direction of the movement path S by a pushing or pulling operation thereof by the worker.
  • the work platform 3 is provided as a pair. And, under a normal operational condition where an article conveying operation is effected with traveling of the stacker crane 2, these paired work platforms 3 are to be stored under the moving conditions thereof at storage locations K provided at the opposed longitudinal ends of the movement path S relative to the stacker crane 2. And, when there arises a need for a work to be effected by a worker such as occurrence of collapse of articles stored in the storage shelf 1 or of articles being conveyed by the stacker crane 2, the work platform 3 stored at the storage location K is moved to the vicinity of the location where such work is required. Then, this work platform 3 is switched over to the working condition, so that the worker will ride on this work platform 3 to effect the required work.
  • a support member 21 for receiving and supporting the platform portion 15 under its riding posture is provided at the vertical center portion of the storage shelf 1.
  • an elongate member 22 formed elongate is provided in each one of the pair of storage shelves 1 along the longitudinal direction of the movement path S and extending horizontal to project into the movement path S. That is, when the work platform 3 is switched to the working condition, the opposed ends of the platform portion 15 along the lateral width direction thereof are received and supported by the elongate member 22, whereby the platform portion 15 is received and supported by the support member 21.
  • the suspended portion 14 of the work platform 3 is provided in the form of a "ladder", consisting of a pair of left and right vertical rods and a plurality of lateral rods supported and connected between the pair of vertical rods. As the worker climbs up the suspended portion 14, the worker can climb to a position higher than the platform portion 15. Further, the suspended portion 14 has such a longitudinal length that the lower end thereof may be located at the same level as the support member 21 and the lateral width of the lower end has a narrower width than the lateral width distance between the pair of elongate members 22.
  • roller wheels 18 which can roll on the upper guide rail 12 as freely rotating about horizontal axes, lower restricting wheels 19 which come into contact with the lower face of the upper guide rail 12 for restricting floating displacement of the suspended portion 14 off the upper guide rail 12 and lateral restricting wheels 20 which come into contact with lateral faces of the upper guide rail 12 for restricting displacement of the suspended portion 14 along the lateral width direction relative to the upper guide rail 12. Then, the suspended portion 14 is suspended and supported to be movable along the upper guide rail 12 with the above-described functions of the roller wheels 18, the lower restricting wheels 19 and the lateral restricting wheels 20.
  • the platform portion 15 when assuming the folded posture, is overlapped with the suspended portion 14 to be located on the side where the stacker crane 2 is present. As the platform portion 15 is developed, i.e. unfolded, from this folded posture, toward the side where the stacker crane 2 is present, the posture is switched to the riding posture. Further, the platform portion 15 has a length which is about 1/3 of the height of the storage shelf 1 and which also corresponds to the total length of approximately four storage sections 4 juxtaposed along the longitudinal direction of the movement path S, whereby the length of the platform portion 15 is set as such a length that allows walking movement of the worker along the movement path S on the platform portion 15 under the riding posture. Further, the platform portion 15 has a width greater than the lateral width distance between the pair of elongate members 22.
  • the platform portion 15 includes a riding portion 24 mounted and supported by the pair of elongate members 22 under the riding posture and a base portion 25 disposed between the pair of elongate members 22 under the riding posture. And, as the platform portion 15 is switched over to the riding posture, the riding portion 24 of the platform portion 15 under the riding posture can be mounted and supported by the pair of elongate members 22. And, with the platform portion 15 being mounted and supported in this manner, the base portion 25 restricts positional displacement of the platform portion 15 along the lateral width direction.
  • the posture of the platform portion 15 under the riding posture is provided as a horizontal posture.
  • the stairway portion 16 Under the non-climbing posture, the stairway portion 16, as shown in Fig. 4 (a) , is overlapped with the platform portion 15 to be located on the side of the presence of the stacker crane 2 relative to the platform portion 15, so that the stairway portion 16 is switched over in its posture from this non-climbing posture to the climbing posture, with obliquely downward unfolding thereof toward the side of the presence of the stacker crane 2 ( Fig. 5 ). Further, when the stairway portion 16 assumes this climbing posture, the stairway portion 16 assumes an inclined posture with the leading end thereof being in contact with the floor surface and also with this leading end being on the side of the presence of the stacker crane 2.
  • the base end portion of the stairway portion 16 is connected and supported to the platform portion 15 at a position distant from the base end toward the leading end side (floor surface side) so that it may project upward from the platform portion 15 under the climbing posture.
  • the stairway portion 16 has its lateral width narrower than the distance between the elongate members 22 along the lateral width direction.
  • the height of the stairway portion 16 under the non-climbing posture is set as a height accessible by the hand of a worker present on the floor surface.
  • the worker will grip the leading end of the stairway portion 16 to push or pull this stairway portion 16, whereby the work platform 3 can be moved along the movement path S.
  • the stairway portion 16 is constructed in the form of a "ladder" including a pair of vertical rods and a plurality of lateral rods connected between the pair of vertical rods. By using this stairway portion 16, the worker can mount and dismount the platform portion 15.
  • the work platform 3 includes an urging means 26 provided as a gas-filled damper for urging the platform portion 15 from the riding posture toward the moving posture, thus assisting a switchover operation to the working condition or the moving condition. That is, when the platform portion 15 is switched in posture to the folded posture, the work platform 3 is maintained under the moving posture with the urging force of the urging means 26. And, when the work platform 3 is switched over from the moving condition to the working condition, the worker will switch over the posture of the platform portion 15 closer to the riding posture side than an intermediate posture (see Fig. 4 (b) ) between the folded posture and the riding posture, against the urging force of the urging means 26.
  • an intermediate posture see Fig. 4 (b)
  • the posture will be switched to the riding posture against the urging force of the urging means 26, with the weights of the platform portion 15 and the stairway portion 16. Also, when the work platform 3 is switched over from the working condition to the moving condition, the worker can switchover the posture of the platform portion 15 toward the folded posture side with a light operational force thanks to the urging force of the urging means 26. And, after the worker has switched the posture of the platform portion 15 from the intermediate posture toward the folded posture side, the posture will be changed to the folded posture with the urging force of the urging means 26.
  • the work platform 3 includes a movement preventing means 28 for preventing movement of the work platform 3, a moving condition maintaining means 36 for maintaining the work platform 3 under the moving condition, and a working condition maintaining means 42 for maintaining the work platform 3 under the working condition. Next, these components will be explained.
  • the movement preventing means 28 includes a braking contact body 30 movable up/down between a position for coming into contact with a lower face of the upper guide rail 12 and a position downwardly away from the upper guide rail 12 and urged toward the distant position by a compression spring 29, a pivot operation type link operational tool 31 pivotable for lifting up/down the braking contact body 30, and a manual operational portion 32 having a pivot operation type hand lever 32a to be pivotally operated by a worker, and a first wire 33 which operably couples the link operational tool 31 and the manual operational portion 32.
  • the braking contact body 30 and the linking operational tool 31 are provided at an upper end portion of the suspended portion 14, and the manual operational portion 32 is provided at a lower end of the stairway portion 16. Further, the first wire 33 is provided along the suspended portion 14, the platform portion 15 and the stairway portion 16, and a tension spring 34 is interposed between the first wire 33 and the manual operational portion 32.
  • the manual operational portion 32 includes a well-known dead point-riding over type clamp device, so that the manual operational portion 32 can be maintained in position at the working position or the non-working position, respectively.
  • the moving condition maintaining means 36 includes an engaging body 39 pivotable between an engaging posture where the engaging body 39 engages with an engaged body 37 provided at the base end portion of the stairway portion 16 and a non-engaging posture where the engaging body 39 is released from its engagement with the engaged body 37 and urged toward the engaging posture by means of a helical spring 38, the manual operational portion 32 and a second wire 40 for operably coupling the engaging body 39 with the manual operational portion 32.
  • the engaging body 39 is provided at an upper end portion of the suspended portion 14 and the second wire 40 is connected to the first wire 33.
  • each of the opposed lateral width ends of the platform portion 15 there are provided a plurality of pivot restricting members 43 along the longitudinal direction.
  • Each one of these plurality of pivot restricting members 43 is provided in the lower face of the platform portion 15 to be pivotable about a vertical axis.
  • the pivot restricting member 43 can change its position between a pivot restricting position (the position denoted with solid line in Fig. 13(b) ) located downwardly of the support member 21 and a pivot allowing position (the position denoted with virtual line in Fig. 13 (b) ) retracted along the lateral width direction away from under the support member 21.
  • the pivot restricting members 43 are located between the pair of elongate members 22 under the condition of the work platform 3 being switched to the working condition and will approach the corresponding elongate members 22 when changed in position from the pivot allowing position to the pivot restricting position. And, under the condition of the pivot restricting member 43 being changed in position to the pivot restricting position, this pivot restricting member 43 comes into contact with the lateral face of the elongate member 22 on the side of the movement path S, thus restricting movement of the platform portion 15 along the lateral width direction.
  • the platform portion 15 includes restricting bodies 44 which are located on the outer side in the lateral width direction of the pair of elongate members 22 under the condition of the work platform 3 being switched to the working condition.
  • a storage maintaining means for maintaining the work platform at its storage location K by e.g. fixing the work platform 3 to a component present adjacent thereto such as a storage shelf 1, when the work platform 3 is stored at this storage location K.
  • the retention of the work platform 3 stored at the storage location K by the storage maintaining means is released and then the worker will push or pull the work platform 3 to the vicinity of the place of work. Thereafter, the worker will pivotally operate the hand lever 32a to its working position, thus preventing movement of the work platform 3 and also allowing the work platform 3 to be switched over to the working condition. Next, the worker will pull the stairway portion 16 obliquely downwards, thereby to switch the work platform 3 to the working condition. Under this condition, the worker will climb up the stairway portion 16 to ride onto the platform portion 15.
  • the worker will effect the work on the platform portion 15 while moving along the movement path S. Further, if needed, the worker will climb up the suspended portion 14 to effect a work at an even higher position. Incidentally, the work will be effected with using the work platform 3 located on the side of the work site relative to the site where the stacker crane 2 is stopped, of the pair of work platforms 3.
  • the worker After completion of the work, the worker will change the position of the pivot restricting members 43 to the pivot allowing position and then will climb down onto the floor surface and will push the stairway portion 16 obliquely upwards, thus switching the work platform 3 to the moving condition.
  • the worker will pivotally operate the hand lever 32a to the non-working position, thus allowing movement of the work platform 3 and also preventing the work platform 3 from being switched over to the working condition. Then, the worker will push or pull the work platform 3 to move it to the storage position and then cause the work platform 3 to be retained at the storage position by the storage maintaining means.
  • the present invention can be favorably applied to an article storage facility including a storage shelf having storing sections for storing articles juxtaposed along the vertical direction and the shelf lateral width direction, a stacker crane that travels on a floor surface of a movement path formed forwardly of the storage shelf along the longitudinal direction thereof, and a work platform on which a worker can ride.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
EP10835784.9A 2009-12-10 2010-10-22 Storage facility Active EP2511198B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009280658A JP5403358B2 (ja) 2009-12-10 2009-12-10 物品保管設備
PCT/JP2010/068728 WO2011070862A1 (ja) 2009-12-10 2010-10-22 物品保管設備

Publications (3)

Publication Number Publication Date
EP2511198A1 EP2511198A1 (en) 2012-10-17
EP2511198A4 EP2511198A4 (en) 2015-04-08
EP2511198B1 true EP2511198B1 (en) 2016-04-27

Family

ID=44145415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10835784.9A Active EP2511198B1 (en) 2009-12-10 2010-10-22 Storage facility

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US (1) US9169066B2 (ja)
EP (1) EP2511198B1 (ja)
JP (1) JP5403358B2 (ja)
KR (1) KR101725171B1 (ja)
CN (1) CN102652099B (ja)
TW (1) TWI508907B (ja)
WO (1) WO2011070862A1 (ja)

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JP6217611B2 (ja) * 2014-12-02 2017-10-25 株式会社ダイフク 物品保管設備
JP6443264B2 (ja) * 2015-08-12 2018-12-26 株式会社ダイフク 物品収納設備
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JP6601385B2 (ja) * 2016-12-27 2019-11-06 株式会社ダイフク 学習用支持装置
CN110325461B (zh) * 2017-02-23 2021-04-13 村田机械株式会社 储料器以及作业用脚手架的形成方法
US10378279B2 (en) * 2017-07-12 2019-08-13 Lam Research Corporation Step ladder with component rack system for fabrication facility
CN111433424B (zh) * 2018-06-26 2022-03-08 日挥环球株式会社 工厂用模块
US10557306B1 (en) * 2019-02-20 2020-02-11 Roddrick Barley Safety pool ladder
US11203872B2 (en) * 2020-02-26 2021-12-21 Dennis J. Hilgendorf Rolling access step
KR20230033188A (ko) * 2021-08-30 2023-03-08 삼성전자주식회사 웨이퍼 보관 시스템

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Also Published As

Publication number Publication date
JP5403358B2 (ja) 2014-01-29
US9169066B2 (en) 2015-10-27
CN102652099B (zh) 2014-09-24
EP2511198A1 (en) 2012-10-17
JP2011121716A (ja) 2011-06-23
US20120312634A1 (en) 2012-12-13
TWI508907B (zh) 2015-11-21
EP2511198A4 (en) 2015-04-08
WO2011070862A1 (ja) 2011-06-16
KR101725171B1 (ko) 2017-04-10
CN102652099A (zh) 2012-08-29
TW201127720A (en) 2011-08-16
KR20120123024A (ko) 2012-11-07

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